| Details of the changes in goodwill for the years ended December 31, 2017 and 2016 are as follows: |
| (In millions of won) | ||||||||
| 2017 | 2016 | |||||||
|
Beginning balance |
￦ | 1,932,452 | 1,908,590 | |||||
|
Acquisition |
35,221 | 19,974 | ||||||
|
Impairment loss |
(33,441 | ) | — | |||||
|
Other |
(19,215 | ) | 3,888 | |||||
|
|
|
|
|
|||||
| ￦ | 1,915,017 | 1,932,452 | ||||||
|
|
|
|
|
|||||